/* * Copyright 2012 Red Hat Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Ben Skeggs */ #include "priv.h" void gf119_gpio_reset(struct nvkm_gpio *gpio, u8 match) { struct nvkm_device *device = gpio->subdev.device; struct nvkm_bios *bios = device->bios; u8 ver, len; u16 entry; int ent = -1; while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver, &len))) { u32 data = nvbios_rd32(bios, entry); u8 line = (data & 0x0000003f); u8 defs = !!(data & 0x00000080); u8 func = (data & 0x0000ff00) >> 8; u8 unk0 = (data & 0x00ff0000) >> 16; u8 unk1 = (data & 0x1f000000) >> 24; if ( func == DCB_GPIO_UNUSED || (match != DCB_GPIO_UNUSED && match != func)) continue; nvkm_gpio_set(gpio, 0, func, line, defs); nvkm_mask(device, 0x00d610 + (line * 4), 0xff, unk0); if (unk1--) nvkm_mask(device, 0x00d740 + (unk1 * 4), 0xff, line); } } int gf119_gpio_drive(struct nvkm_gpio *gpio, int line, int dir, int out) { struct nvkm_device *device = gpio->subdev.device; u32 data = ((dir ^ 1) << 13) | (out << 12); nvkm_mask(device, 0x00d610 + (line * 4), 0x00003000, data); nvkm_mask(device, 0x00d604, 0x00000001, 0x00000001); /* update? */ return 0; } int gf119_gpio_sense(struct nvkm_gpio *gpio, int line) { struct nvkm_device *device = gpio->subdev.device; return !!(nvkm_rd32(device, 0x00d610 + (line * 4)) & 0x00004000); } static const struct nvkm_gpio_func gf119_gpio = { .lines = 32, .intr_stat = g94_gpio_intr_stat, .intr_mask = g94_gpio_intr_mask, .drive = gf119_gpio_drive, .sense = gf119_gpio_sense, .reset = gf119_gpio_reset, }; int gf119_gpio_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_gpio **pgpio) { return nvkm_gpio_new_(&gf119_gpio, device, type, inst, pgpio); }